Improved aqueduct-coupling



UNITED STATES PATENT OFFICE.

JOHN ALDEIOE, or LAKE VILLAGE, NEW EAMPsHIEE.

.lMPROVED- AQUEDUCTCOUPLINC'?.`

Specification forming part of Letters Patent No. 52,010, dated January 16, 1866'.

To all whom it may concern: A

' Be it known that I, JOHN ALDRICH, of Lake Village, in the county of Belknap and State of New Hampshire, have invented a new and Improved Coupling for Aqueduct, Pump, or other Similar Logs; and I do hereby declare the following is afull and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon. l

Figure l is a side view. Fig. 2 is a longitudinal section. Fig. 3 is amodified form for curves or very uneven ground. IFig. xMs a longitudinal section, showing the connection of 'two logs, G G. Fig. 5 is a tool to be used for hard wood, as described hereinafter.

Thenature of myinvention consists in coupling aqueduct, pump, or other similar logs to gether by means ot a peculiarly-constructed.

coupling of east-iron or other suitable metal,

p to form a stronger, more perfect, durable, and

economicalV `joint or connection.

To enable others skilled-in the art to make and use my invention, I will-proceed to describe its construction and operation.

Similar letters indicate corresponding parts of the several figures, except Fig. 5.

A is a tube with a ring or ange, B,fequi I distant from each end. The outside of this Y tube is of uniform size in diameter. The interior diameterlgradually increases each'way from the cente'r'to the ends. which should be as thin or sharp as practicable, forming a circular wedge, as shown in section, Fig. 2, from the middle or ring B to each end, so it may be readily driven into the end of a log.

The ring B is to govern the depth ot' thel coupling, to make it equal in each log when substantially as and for the have a stock, A, a handle, B, and bitsE E, to cut the annular groove. The lower end, C, of the stock should lit the bore H of the log.

To use this coupling, first drive it into the first log, previous to laying it in place. Then i place the next log and drive it onto the coupling till the end strikes the ring Bk, when the joint is complete, as shown in Fig. 4. Now drive in the next coupling, and proceed asbefore, and so on, with each successive log. For curves, use an angular coupling, like Fig. 3,

with long or short logs, according to the raone end of the log is reduced to three-fourths l of an inch or less in thickness, an quently the irst part to rot through.

My improvement also effects a saving of six or more inches in the length of eachlog, also d is freof one-half the time usually required to puty them togetherafter being bored.

The outside of this coupling, from the ring to each end, may be sufficiently tapering to admit of being easily molded.

I do not claim simple cylindrical metallic couplings for logs, as such have been used before; but y y What I claim as my invention, and desire to secure by Letters Patent, is

A log 'or other wooden pipe coupling made of cast-metal with thin or sharp ends, and a central outwardly-projecting ring or flan ge, B, purpose herein specied.

i JOHN ALDRICH. Witnesses:

G. P. S. WAEDWELL, M. B. WAEDWELL. 

